WireM’s are Awesome!

WireM is a connector kit for the BlinkM family of Smart LED products that makes creating multi-BlinkM installations fast and easy. It contains all parts needed to make BlinkM strands controlled by LinkM or Arduino with up to 10 BlinkM devices.

WireM works with any combination of BlinkMs, MaxMs, MinMs, FreeMs and CtrlMs, making prototyping fast and easy. No soldering is required. Put connectors wherever you want on the ribbon cable, plug into your BlinkMs, plug in a controller–or just a 5v power supply if you want an easy way to make a power bus–and go! Buy multiple kits if you want more than 10 BlinkMs on a single bus.

blink(1), the USB RGB LED

blink(1) is a super status light. It fits into any USB port on almost every type of computer: Mac, Linux, Windows, Raspberry Pi, Beaglebone, WRT router, etc. No drivers needed and APIs in about every language you could want. And it's all open source.
Buy one now!